Otis l



UNITED STATES PATENT OFFICE.

OTIS L. DUNFEE, MONROETON, PENNSYLVANIA.

VEHICLE BOLSTER-PLATE.

SPECIFICATION forming part of Letters Patent No. 496,249, dated April25, 1893. Application filed December 22, 1891. flerial No- 415,893. (Nomodel.) i

To all whom it may concern.-

Be it known that I, OTIS L. DUNFEE, a citizen of the United States,residing at Monroeton, in the county of Bradford and State ofPennsylvania, have invented certain new and useful Improvements inBolster-Plates for Vehicles; and I do declare the following to be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and usethesame, reference being had to the accompanying drawings, and to theletters of reference marked thereon, which form a part of thisspecification.

My invention relates to improvements in wagon bolster-plates, andconsists of the pe-' culiar construction of the plates as hereinafterdescribed and shown, and has for its object the production of platesthat better subserve the purpose for which they are used than those nowin use, and also to prevent the bolsters and sand-boards to which theyare attached from splitting from the strains to which they are subjectedwhile in use. I e

I illustrate my invention by the accompanying drawings, in which likeletters represent like parts throughout.

Figure 1, represents a top plan view of a portion of a wagon bolsterwith myimproved bolster-plates attached thereto, and Fig. 2, representsa side view of portions of abolster and a sand-board of a wagon with myimproved bolster-plates attached thereto. Fig. 3, is a central,vertical, longitudinal section of a portion of a bolster and sand-board,and the bolster-plates thereon, showing a side view of the verticalbolts, the section being taken on line X, X, Fig. 1.

A, is a top plate secured to B, is the bottom plate secured to thesandboard D.

F, is the king-bolt.

a, (1, indicate flanges or ears extending upward from the platealongside of the bolster, and b, b, corresponding flanges extendingdownward from the lower plate alongside of the sand-board.

d, d, are horizontal bolts passing through the flanges a, a, and bolsterC.

e, e, are horizontal bolts passing through the flanges b, b, andsand-board D.

the bolster C. I

ss V

in the plate B, so that they shall be flush with its upper surface, sothat the plate A, shall slide over them without friction. The plates arecorrugated in a circle about the king-bolt, the upper one being acounter-part of the lower. The sides of the plates opposite theking-bolt and between the flanges project laterally in a circular form,as indicated in Figs. 1, and 2.

By reason of my flanges being constructed so Wide as to extend over andbeyond the surfaces of the bottom of the bolster and top of thesand-board, and by reason of being provided with the circularprojections between the flanges opposite the king-bolt and the raisedportions 0, c, and g, g, I obtain a large flat bearing for thebolster-plates, and thus prevent the bolster from tilting as it movesbackward and forth around the king-bolt, and

What is true of the advantages of my bolster'plate as attached to thewagon bolster, is also correspondingly true of the lower plate asattached to the sand-board of the wagon. I provide the upperbolster-plate with an oiling hole a, which communicates with the cir-.cular corrugated surface around the king bolt, so that the plates areconveniently oiled to prevent friction.

Having thus described my invention, what sponding corrugations on plate13, plate B hav- 1 claim, and desire to secure by Letters Pating flangesto embrace the sand board, subent, is-- stantialy as described.

In combination with a bolster, sand board In testimony whereof I affixmy signature in 5 and king boll; of a wagon, bolster plates A, presenceof two witnesses.

and B, plate having a flat upper surface on which the bolster rests, acentral large circu- OTIS D UN F lar face, flanges a, a, embracingbolster, said Witnesses: face on its under side provided with circularC. T. SACKETT, [o corrugated projections to engage with cone I/VILL IV.MYER.

